Evidence suggests that women with myeloproliferative neoplasms have a higher risk of maternal and fetal complications. In this data analysis, researchers evaluated outcomes for pregnant women with essential thrombocythemia, polycythemia, or myelofibrosis and their infants.

The risk of hepatobiliary cancer and immune-mediated and cardiovascular diseases later in life is increased in women with intrahepatic cholestasis of pregnancy (ICP) than in women without this condition.

Female meningioma survivors are more likely to want and to become pregnant than the general population, and some research indicates that pregnancy may be a risk factor for tumor progression or recurrence.

Hemodynamic changes associated with pregnancy explain the growth of benign tumors in pregnant women. The study also identified some key characteristics associated with rapid growth of meningiomas in pregnant women.